Valve cover bolt seal confusion.

Discussion in 'Mechanics Garage' started by iopsd, Jan 23, 2023.

  1. iopsd

    iopsd New Member

    Country:
    Canada
    Joined:
    May 31, 2022
    Messages:
    12
    Likes Received:
    2
    Trophy Points:
    3
    Location:
    Chilliwack, B.C
    Map
    Looking to do a valve adjustment, or atleast inspection before I depart on a big trip somewhat soon and noticed that the bolt seals for the valve cover appear to have two different part numbers.
    >90543-ML4-610
    >90543-MV9-670
    Are these effectively the same part? I can't find any difference in the photos of the part.
    [​IMG]
    Seals circled in diagram incase I wasn't clear.
     
  2. ridervfr

    ridervfr Member

    Country:
    United States
    Joined:
    Dec 26, 2009
    Messages:
    3,907
    Likes Received:
    102
    Trophy Points:
    78
    Location:
    South FL
    Map
    It is a reuseable part in my experience. Same for the gaskets number 5 - I do have a new set that I bought a while back that sit inside my armour in my bedroom.
     
    iopsd likes this.
  3. Captain 80s

    Captain 80s Member

    Country:
    United States
    Joined:
    Apr 25, 2009
    Messages:
    4,032
    Likes Received:
    1,134
    Trophy Points:
    158
    Location:
    Edmonds, WA
    They are the same part. Qty 8.
     
    iopsd likes this.
  4. iopsd

    iopsd New Member

    Country:
    Canada
    Joined:
    May 31, 2022
    Messages:
    12
    Likes Received:
    2
    Trophy Points:
    3
    Location:
    Chilliwack, B.C
    Map
    I figured that much, I just want to play it safe rather than tear apart the bike more than is needed.
    Alright, thanks.
     
  5. Captain 80s

    Captain 80s Member

    Country:
    United States
    Joined:
    Apr 25, 2009
    Messages:
    4,032
    Likes Received:
    1,134
    Trophy Points:
    158
    Location:
    Edmonds, WA
    Those grommets are actually pretty critical. The valve cover bolts are shouldered (they bottom out when installed) and those grommets are what apply the pressure on the cover and gasket. I would have customers buy just the gasket and not the grommets (cuz they were too expensive for what they were) and then still have a leak when they were done because the grommets were too flattened from age.

    Not every time, but enough to have an "I told you so" chambered.
     
    Terry Smith likes this.
  6. squirrelman

    squirrelman Member

    Country:
    United States
    Joined:
    Jul 27, 2006
    Messages:
    9,445
    Likes Received:
    593
    Trophy Points:
    128
    Location:
    Buffalo, NY
    Map
    the washers need to be fitted with the copper-colored side UP........if i remember correctly.
     
    Last edited: Jan 24, 2023
  7. Captain 80s

    Captain 80s Member

    Country:
    United States
    Joined:
    Apr 25, 2009
    Messages:
    4,032
    Likes Received:
    1,134
    Trophy Points:
    158
    Location:
    Edmonds, WA
    Yeah, with the ones that are hard like that , def.

    The Hawk is just a rubber grommet with a top chrome cupping washer. I literally just tightened down my Hawk covers before typing this with all new rubber... it was surprising how far I had to keep squishing before the bolts bottomed out. Quite the difference from when I removed them.
     
Related Topics

Share This Page